Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.
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Q:
Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.
- 1$$ {3080}cm^2$$true
- 2$$ {2300}cm^2$$false
- 3$$ {3460}cm^2$$false
- 4$$ {3600}cm^2$$false
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